Stump- extractor



(No Model.)

H. L. BOYLE.-

STU-MP EXTRAUTOR.

No. 0,644. Patented Jan.. 13, 1885.

iiirnn raras ArtNr trice.

I-IOB'IIG'R, Il. OYLFn OF I'IAllIII/FON, MICHUIAN.

STU IVI P-EXTRACTOR.

LJILCEFICATION forming part of Letters Patent No. 310,644, dated January 13, 1885.

A pplieaiion flied September 25, 1R84.

To (all 11i/1,0m, it 11mg/ concern:

Be it known that I, Herren L. 'Ihirlytr a citizen of the United Sta-tes of America, residing at Hamilton, in the county of Allegan and State of Michigan, have invented certain new and useful Improvements in Stuml'i-Pullers; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters or iigures of reference marked thereon, which form a part of this specification.

My invention relates to certain new and use- `ful improvements in stun1p-extractors, the object of the same being to provide a light and portable apparatus which can be readily moved from place to place and adjusted so as to suit the contour ofthe ground.

My invention also consists in providing an adjustable tripod at its upper end with a connecting-block, which is concave at its upper surface, and is adapted to receive a convex bearing-block, upon which operates a sleeve carrying anti-friction rollers upon which bears an operating-wheel having` a nut rigidly attach ed thereto, so that the wheel, when turned, will either raise or lower the screwthreaded rod.

My invention also consists in providing the lower end of the tripod with shoulders,which are adapted to enter castings, to which are secured stub-axles.

My invention further consists in the construction and combination of the parts,as will be hereinafter more fully set forth, and specifically pointed out in the claims.

In the accompanying drawings,whichillnstrate my invention, Figure l is a side View showing the organization of the parts of the apparatus when in use. Fig. 2 is a planview. Fig. 3 is a detail sectional view; and Figs. 4, 5, 6, and 7 are detail views.

A A A represent the legs of atripod, which are connected to each other at their upper ends by a block or head-piecc, B, which has a central opening, and is recessed for the reception of the upper ends of the legs, which are secured thereto pivotally by pins b. These legs are provided intermediately with perfon rations c ,i; through which pass pinsc., having slotted endsand wedgeshaped keys, which pass through the slots, by means of which horizontal rods A, having bent and slotted ends, are secured to the legs, so that said legs may be adjusted to and from each other. By removing the pins c', thereby deiaching the braee-rods A, the legs may be folded upon each other. The adjustment of the legs can be secured either by moving the pins and bracerods to the upper or lower perforation, or by changing the position of the pins inthe slots. The lower portions of the legs Aare cut at al1 angle and provided with vertically-depending blocks c, above which are formed shoulders. Two of the legs have rectangular' blocks, and are adapted to receive castings (l, as shown in Fig. 6, one of the sides of said casting being beveled, as shown at c, so as to provide side bearings for the supportingwheels Cl', which side bearings will be parallel with each other. The castings C are secured to the base of the legs A by stub-axles c which pass through perforations 0" in the castings and depending portions c ofthe legs. The stub-axles are provided at their outer ends with pins which retain the wheels thereon, and at their inner ends with perforations, through which pass similar securing-pins, the portions of these stub-axles which pass through the periorations in the castings being reduced in size, so as to provide a shoulder which will bear upon the beveled side of the casting C. To one ofthe legs is secured a shoe, C, which is secured to the lower portion ofthe leg by a plate and screw, the upper portion of the shoe being provided with a hollow block, as shown in Fig. 7. ly connecting the shoe in this manner the shoe is permitted tov rotate upon the end of the leg. One end of this shoe has attached thereto a bail and draft-hook, to which power is attached when it is desired to move the apparatus from place to place.

It will be seen from the construction hereinbefore described that the supporting-wheels run parallel to each other, and that the tripod may be adjusted to suit the inequalities of the ground without affecting the parallelism of the supporting-wheel. rlhe upper portion oi.' the block or casti ng B is concave, as shown at d, and upon this concave portion bears a block or rest, l), the under portion of which is conver. To this block 'is attached, by means of IOO an encircling strap, e, which lies within a groove in the block D, an arm, E, which is provided at its end with vertical and horizontal guide-rollers. The upper portion of the block D is provided with inclined ways d, and at its outer circumference, adjacent to these ways, with an upwardly-projecting flange. Upon the upper surface ofthe block D rests an open frame, F, within the inner and outer rims of which are pivoted anti-friction rollers j', as shown in Fig. 4. rlhe central perforations of the ring F, casting D, are of about the same size, and are slightly greater in diameter than the screw which passes through the same, while the opening in the central casting, B, is of much greater diameter than either of the openings th rough which the screw passes. Upon the anti-friction rollers rests a screw-threaded nut, G, the

' upper portion of which is rectangular in crosssection, while the lower portion is constructed similar to the upper face of the block or casting D, and through this nut passes the screw B.

H. represents a wheel which is provided with radial spokes h and two or more grooved disks, t', of different sizes, around which passes the operating-cord I. The hub of' this wheel is 'rectangular in cross -section, and is provided with a square metallic socket, lf, into which the upper portion of the nut G will tit. The nut and hub move with each other when the Wheel is rotated bythe cord I. The lower portion of the screw-threaded rod B, which passes through the openings in the blocks or castings B D and the nut G, is provided at its lower end with a link, Z, which is secured thereto by a pin, said link engaging with a clevis which encircles the end ot' a lever, J, which is provided with chains for attaching the same to the stump or root, the outer end of the lever being adapted to rest upon a solid foundation.

In raising small stumps the end of the screwthreaded rod may be attached to the stump to be removed by means of chains, andthe lever J is only employed when necessary.

It will be seen from the construction hereinbefore described that when one end of the rope I, which passes over the horizontal pulleys and between the vertical pulleys and from thence around one of the disks of the wheel, which are provided with V-shaped grooves, is drawn upon, the wheel II will be rotated,and will move the screw-threaded rod upwardly, and as moved upwardly the screwthreaded rod will be allowed to play, so that there will be no side strain, but always a verA beveled side, and stub-axles c, supporting carrying-wheels and securing the castings to the tenons, substantially as shown.

2. In a stump-puller, the casting or block B, having the legs or supports pivotally attached thereto, and provided on its upper side with a concave bearing, in combination with a convex block, D, nut G, supported thereon, operating-wheelH, having graduated disks, anti-friction rollers carried in frame F, and screw-threaded rod B, substantially as shown, and for the purpose set forth.

3. In a stump-puller, a tripod carrying at its upper end a rotary wheel carrying an internally-screw-threaded block which is supported upon an oscillating bearing, and wheel H, carrying graduated disks t', substantially as shown, and for the purpose set forth.

4. In a stump-puller, a supporting-frame provided at its upper end with a concave bearing-block, nut G, convex bearing-block D, having anti-friction rollers interposed be tween lthe same, and an operating-wheel having graduated disks t'v and screw-threaded rod B, substantially as shown, and for the purpose set forth.

5. In a stump-puller, substantially as described, the bearing-block D, grooved near its upper end, and provided with a strap, e, for supporting the arm E, which carries at its outer end vertical and horizontal guide-rollers, substantially as shown, and for the purpose set forth.

6. In a stump-puller, a supporting-frame the members of which are connected to each other at their upper ends by a casting having a central opening and a concave bearingsurface, a bearing-block adapted to lie within said concave surface and support an arm having guide-pulleys attached to its outerend, a ring, F, carrying a series of anti-friction rolle'rs, and nut G, carrying the operating means, as specied, and a screw-threaded rod connected at its lower end to alever, the parts being combined and organized substantially as shown, and for the purpose set forth.

In testimony whereof I aix my signature in presence of two witnesses.

HoMnn L. BoYLE.

\Vitnesses:

CHARLES B. BRowNnm., HARVEY A. BTLLS.

IOO 

